Reviews of shows at London theatres

The weird 'sport' of 'competitive endurance tickling' provides a novel topic, but a flimsy plot and a lack of real comedic power fails to realise the inherent potential.

Admirable directing and engaging performances make for a highly watchable play, even if the maelstrom of issues is overwhelming and the ultimate message too overt.

A laudable central performance and able support are ample to carry a work examining the life of Alan Turing, but some production elements prove irritating and lack creative invention.

An exquisitely dark, lip-bitingly funny endeavour, perfectly delivered with macabre touches - a final directorial tour de force from Artistic Director Matthew Parker. Unmissable.

A wonderful play, gripping story, faultless acting and certainly recommended to anyone. Absolutely fantastic.